| Problem | Likely Fix | |-----------------------------|-----------------------------------------------| | HX711 not found in Proteus | Library not installed correctly → recompile | | DOUT stays HIGH | Check wiring; add pull-up resistor on DOUT | | No serial output in Proteus | Use + set baud rate match| | Weight value erratic | Increase averaging in code ( scale.get_units(10) ) | | Proteus crashes | Incompatible library version → try another source |
The HX711 uses "pseudo-SPI" to communicate. You can use any two digital pins on your microcontroller for clock and data. Adafruit
+------------------+ +------------------+ | Arduino Uno R3 | | HX711 Module | | | | | | Pin D3 |<--------'| DOUT (Data) | | Pin D2 |--------->| PD_SCK (Clock) | | | | | +------------------+ +------------------+ | v +------------------+ | Variable Res. | | (Load Cell) | +------------------+ Component Selection Open a new schematic workspace in Proteus. hx711 proteus library
Verify the path matches your specific version exactly. Double-check that both .IDX and .LIB files are present together inside the target LIBRARY folder. Simulation Crashes / Missing VSM Model
void loop() long reading = scale.read(); Serial.println(reading); delay(500); | | (Load Cell) | +------------------+ Component Selection
With the .HEX file loaded, you can start the simulation. The primary method to observe output is by attaching a Virtual Terminal to the microcontroller's serial UART pins. This allows you to see raw ADC values or calculated weight data as printed by the code.
This model mimics the physical chip by accepting small differential analog voltage inputs (simulating a strain gauge load cell) and converting them into a 24-bit digital stream via a two-wire serial interface (Clock and Data). 2. How to Download and Install the HX711 Library Simulation Crashes / Missing VSM Model void loop()
Ensure you click the interactive adjustment arrows on the POT-HG component while the simulation is actively running. Verify that your microcontroller source code configuration sets the exact pins used in the physical schematic layout.
Simulation Tip: Because standard load cells generate mechanical strain, the Proteus load cell simulation model typically includes a toggle button or a potentiometer. Adjusting this potentiometer during emulation simulates adding or removing physical weight. Writing the Arduino Simulation Code
The is a 24-bit ADC designed for weigh scales and load cells. It interfaces easily with microcontrollers (Arduino, PIC, etc.) via two wires: PD_SCK (clock) and DOUT (data).
In Proteus, the microcontroller properties are edited to point the "Program File" to the generated HEX file. Real-time Interaction: